Automatic door-locking device.



J. DORNETH.

AUTOMATIC DOOR LOCKING DEVICE.

APPLICATION FILED DEC-5.1913.

Patented Aug. 17, 1915.

3 SHEETSSHEET I.

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Wiin sses: J //w/ J. DORNETH.

AUTOMATIC DOOR LOCKING DEVICE.

'APPLICATION FILED DEC. 5.1913.

Patented Aug. 17, 1915.

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AUTOMATIC DOOR LOCKING DEVICE.

I APPLICATION FILED 0Ec.5,191s.

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JULIUS DORNETH, or BERLIN, GERMANY.

To all whom it may concern: 7

Be it known that I, JULIUs DORNETH, a subject of the German Emperor,and-residing at Berlin, Germany, have invented certain new and usefulImprovements in Automatic Door-Locking Devices, Ofwhich the following isa specification.

My invention relates to improvements in automatic door locking deviceswhich can be operated from the inside and the outside of the door, andmore-particularly my invention relates to improvements in door lock ingdevices of that class, in which a rockable and longitudinally shiftablelocking lever is adapted to be rocked over the door frame and door andlocked by means of a holding member formed with an angular slot. v Theobject of the improvements is to provide a locking device of this classin which the locking lever is adapted to be shifted in the direction ofits pivotal axis, and in which the holding member is provided with twoslots or hooks which are disposed at different distances from the axisof the locking lever and in such a way, that in the elevated positionthe said locking lever permits the door to be slightly opened, for whichpurpose it is rocked at a certain angle by the door being opened and issimultaneously held in the slot or hook which is adjacent to its axis,while it completely locks the door when it is in its lowermost position.

For. the purpose of explaining the invention several examples embodyingthe same have been shown in the accompanying drawlngs, in which the sameletters of reference have been used in all the views to indicatecorresponding parts.

In said drawingsFigure 1, is a front v1ew of the inner slde of a doorprovlded with my improved locking means and showing the locking means inlocking position? Fig. 2, is a similar view of the same parts thelocking means shown in Figs. 1 to 3,"

Fig. 5, shows respectively a side view and a cross-section of the upperpart ofthe bail providing themain member of the locking means, Fig. 6,is a' front'view of a modification of the locking means showing thelock- Specification of Letters Patent.

partly Patented Aug. it, 1915.

Application 'filed December 5, 1913. Serial No. 804,808.

detail of the locking mechanism shown in Figs. 6 and 7, Fig. 9 is adetail, Figs. 10 to l2,show a further modification of the lock lngmeans, Fig. 10 being a front view Fig. 11 a side view and Fig. 12 a planview of the mechanism, and Fig. 13, is a plan view showing a furthermodification.

Referring to the example illustrated in Figs. 1 to 5, a lever 4: in theform of a substantially U-shaped bail has a rocking sup port with itsbent ends in an upper and lower bearing 2 secured to the frame of adoor 1. The horizontal shanks 3 of the said bail provide the lockingmembers. To the door 5 plates 6 are secured which at their inner orright hand ends 7 and at their outer or left hand ends 8 are bentforward and out of the plane of the door, the inner ends being in theform of hooks and the outer ends being provided with angular slotscomprising horizontal and vertical branches 9 and 10. The shanks 3 areformed with reduced or flattened portions which are adapted to engagethe slots 9 and 10.

In the locking position shown in Fig. l the bail engages with itshorizontal shanks 3 in the slots 10 and behind the 1100 {S 7 and 9.; soas to prevent the door from being openedf In order to open the door itis necessary to lift the bail This is done by means of a pin 11 securedto the bail about the middle thereof. A second pin 12 is secured tothelower one of the horizontal shanks 8 and it is in such a positionthat in the closed position of the door and in the locking position ofthe bail 4 it engages in a bore made in the lower one of the bearings 2.When the bail lis lifted the pin 12 is disengaged from the bore and whenturningthebail the pin 12 slides over the upper turns from a horizontalposition: to an upwardly inclined position, Fig. 2. The arm 16 is heldin the horizontal position by spring pins let (Fig. t) which are seatedin the frame 18 and engage notches in the arm '16. The arm 16 isprovided at its end with a beveled plate 17 (see Fig. 3). When pushingthe key 15 into the door the spring actuated pins 14L are forcedbackward and into the position shown in Fig. 4, whereupon by turning thekey the arm 16 can be rocked upward. Thereby the bail 1 is lifted androckedforward by the beveled plate 17 on arm 16 against the tension ofspring 13 (which is relatively light), so that the shanks 3 aredisengaged from the hooks 7 and 9, and from the door, through the slots10.

Above the bail a leaf spring 19 (Figs. 1 and 5) is secured to the doorwhich at its free end is connected by a string, chain or the like 20with the upper end of the bail 4:

and tends to rock the bail into the position shown in Fig; '3 in dottedlines, that is into the position which is opposite to the lockingposition. The spring 19 is stronger than the spring 13, andovercomes thelatter in tu lrning the bail to unlocked position.

upper plate 6 is formed with afinger2l which when closing the doorpresses on the spring'19 so as to throw the same out of action.Therefore the spring 13 (which is comparatively weak) can come intoaction so as to rock thebail i into locking posibail outwardly.

tion. hen the door is opened the finger 21 releases the spring 19, sothat the latter rocks the bail into open or non-lockingposition, asexplained above.

My improved locking mechanism may also be used as a door securing orsafety device. For this purpose a plate 24 is mounted on a pivot 23provided below the lower end of the bail 4. When the plate is turnedupward and into the position shown in Fig.

.3, the said plate engages below the lower end of the bail 4 and holdsthe same in lifted position with the pin 12 disengaged from the slot'inthe bearing 2. If now the door is opened from within, for example bymeans of a knob or handle 25, the bail; is

Y rocked by the door without however com;

pletely leaving the slots 10, as there is no device (such as the cam 17)acting to turn the As soon as the door has been partially opened (andbefore the spring 19 can act to turn the bail outwardly into unlockingposition) the lug 8 which,

i when the door is closed, occupies a position which does not interferewith the upward and outward movement of the bail, when the door ispartially open it (said lug 8) juts out so as to engage the uppersideofthe arm 3 of the bail and prevents the arm 3 being raised upwardly theslight distance necessary to pass. the lug 9 in its outward disengaglngmovement, thus malntainlng the engagement.v The lug 8, furthermore,

when the door is partially open engages partially over the arm 3 of thebail.

In order to prevent the door from being opened from without, the bracket18 can be engages'with a lug 28 in a corresponding notch 28 of thebracket so as to hold the same in horizontal position. hen lifting theleaf spring 29 with its lug 28 outof ena rocked about a pivot 22. A leafspring 29 V gagement with the notch 28 the bracket isr turned by gravityabout the pivot 22 and it is held by a stop '30 in the position shown indotted lines in Fig. 1. Thereafter it is not possible to lift the bail4. The bail is provided with a pin or abutment 31 which is inpositionfor engagement by the bracket 18 when the latter is rocked downward.

Therefore the bail 4 can be lifted only after the bracket 18 has beenrocked upward. Should the turning upward of the bracket 18 have beenomitted when closing the door,

the latter is automatically locked and it is not possible any more tounlock the same from without. Toavoid this a leaf spring 32 is providedwhich in the horizontal position of the bracket 18 isforced backward by'the releasing lever 16,-so that it can not i come into action, and whichprojects from the door when the bracket has been rocked downward, sothat'when closing the door it acts on the pinv 11 beforethe shanks 3'engage in the slots 9, so that the door is not locked. v essary toprovide a key '15 which can be Furthermore it is not always necremovedfrom the "door. Instead of such ,a key an element such'as a door knob, alever, or the like may be provided which is fixed to the door. Thismodification is shown in Figs. 6 'to9. Also in this case the a VU-shaped locking bail 4c is lifted by means of a releasing lever 16which engages below the said bail. For this purpose the bail is formedat its lower end with a collar 33 which is formed with a notch 34.Between the bail and the frame of the door a leaf.

spring 35 is located which engages in the 7 said notch with a noseassoon as the bail is.

lifted and turned and has assumed the position shown in Fig. 6in dottedlines. At its upper end the bail l is'provided'with a screw-threadedpart 36 which is engaged by a pin 37 secured to the frame of the door.

As appears from Fig. 6, in the lowermost position of the bail 4'the'threads36 are a its mechanism.

suitable distance below the pin 37 and out of engagement therewith. Whenrocking the releasing lever 16 and lifting the bail 4, the latter is atfirst lifted Without being turned, until its horizontal shanks 3" are atthe rear of the slot 10 and the screw-threads 36 are engaged by the pin37. Upon furth-er rocking the lever 16 the bail 4 is lifted and rockedinto the position shown in Fig. 6 in dotted lines in which it is held bythe spring engaging with its lug in the notch 34. When closing the dooragain, the releasing lever 16 forces the spring 35 backward, so that itslug is disengaged from the notch 34-. Thereupon the bail 4 drops bygravity into its lowermost position, while being simultaneously turnedby the screw threads 36 and the pin 37 so as to lock the door.

In order that the bail may be used as a safety device, (as shown in Fig.7) means must be provided as in the example described above to preventthe said bail from dropping from its intermediate position at the rearof the slot 10 into its lowermost position. As shown such means consistof a rocking pivotal plate 38 which is adapted to bear against a collar39 formed on the bail.

The bracket 18 whichcarries the releasing lever is acted upon by aspring 40 (Fig. 8) which has the tendency to rock the same and the lever16' about a horizontal axis 41 and into the position shown in dottedlines in Figs. 7 and 9. This is normally prevented by means of a lockingpawl 42. If the locking pawl is released by hand, the bracket 18 and thelever 16 are rocked upward and the lever 16 engages above a collar 43 ofthe bail 4, so that the bail d can not be lifted and the door can not beopened from without, because the lever 16 is out of its position forengagement by the look In the example iilustrated in Figs. 10 to 12instead of the spring 35 shown in Figs. 6 and a spring actuated latch44. is pro vided which holds the elevated bail 4: in elevated position,until upon closing the door the releasing lever 16 forces the latch 4%backward, whereupon the bail 4 moves downward while being turned. Thebail is provided with horizontal shanks 3 correspending to the shanks 3of Figs. 1-5, and 3 of Figs. 6-9. I

7 and 9 are hooks on the door similar to the hooks 7 and 9 of Figs. 1-5and 7' and 9 of Figs. 6-9. The releasing lever 16 forms the nut arm of asafety lock, and in the example shown in the fignres it is secured tothe inner barrel 4-5 of a Yale lock 46 which as is'known in the art canbe turned only after a key 47 has been pushed into the lock.

To the end of the releasing lever 16 a spring actuated hook 48 ispivoted, and a collar formed on the bail 4 is formed with acorresponding notch 59. Ordinarily the hook 4:8 bears against the bail 1without engaging in the notch 59, because in order to permit the same toengage in the notch it is necessary to slightly lift the lever 16 asappears from Fig. 11. If this is done by pushing the key 47 into thelock and slightly turning the barrel 15 and the nut arm 16 the hook 4L8engages into the notch 59, whereupon the bail L is locked and can bemoved only by means of the key 47. Thereupon the key is turned backagain and pulled out of the lock, and the door locking device can beopened from within and without only by means of the key which fits intothe safety lock.

The lock I6 is mounted on a horizontally shiftable slide 49 providedwith guide slots 50 and 51, and it is held in position by means of alatch In the normal position shown in Fig. 10 in full lines the lock canbe operated from without by means of the key, but it can not be operatedthereby in the position shown in dotted lines. In this position theslide 49 engages with a pin 53 in a slot 54 of the lever 3 so that thelatter can not be lifted.

In the example shown in Fig. 13 for looking the bail l the inner barrel15 and the lever 16 can be fixed in two positions. The outer barrel ofthe lock is provided apart from the usual tumblers which are located ina vertical plane with tumblers which are mounted in an inclined plane.If now the inner barrel is turned by means of the key, until thetumblers controlled thereby are opposite to those of the outer barrelwhich are mounted in an inclined plane, and the key is pulled out of thelock, the lever 16 is looked in a second position in which it is engagedby a hook Besides it is provided with a hook 556 which bears on a pin 57of the lever 3 This construction is preferable, because instead of theU-shaped bail 1 a single lever 3 is required, because in the lockedposition the releasing lever 16 has simultaneously the function of alocking lever such as 3 in Figs. 1 to 5.

3 7 and 9 are similar to the parts 3, 7

and 9, 3 7 and 9 and 3 7 and 9 shown in the preceding figures. In orderthat the key can readily be-insorted in the perpendicular position, aspring actuated pin 58 is provided within the outer barrel 4-6, whichpin slightly projects a short distance into the inner barrel and holdsthe same in the proper position. If the inner barrel is turned by thekey, the spring actuated pin may be provided in the inclined plane whichis formed by the additional tumblers.

I claim herein as my invention:

1. In a door securing device, the combinao enin the door for holdin en aement 2) D U D with the holding means which is nearest the pivotal axisof the locking device, and means to shift and rock the locking deviceout of locking engagement with all the holding means. v

2. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one of the members comprisinghook shaped portions disposed at different distances from the pivot ofthe locking member and in position for locking engagement with saidlocking device, a portionon the locking device arranged when opening thedoor for holding engagement with the hook shaped portion which isnearest the pivotal axis of the locking device, and means to shift androck the locking device outof locking engagement with both hook shapedportions.

3. In a door securing device, the combination with a door member, and aframemember, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one of the members comprisinghook shaped portions disposed at difierent distances from the pivot ofthe locking memher and in position for locking engagement with saidlocking device, a portion on the locking device arranged when openingthe door for holding engagement with the hook shaped portion which isnearest the pivotal axis of the lockmg devlce, normally inoperativemeans to hold the locking device in shifted position in which it isadapted to be engaged by the hook shaped portion which is nearest thepivotal axis of the locking device, and means to shift and rock the looking device out of locking engagement with bothhook shaped portions. p

4. In a door-securing device, the combination with a door member, and aframe member, of a substantially U-shaped locking device on one of saidmembers mounted for rocking and axial movement and adapted to be rockedso as to extend over both members, holding means on the other one of themembers comprising hook shaped "portions vdisposed at differentdistances from the pivot of the locking member and in position forlooking engagement with said locking device, normally inoperative meansto hold the U-shaped locking device in shifted position with itshorizontal shanks out of and its vertical part in position for lockingengagement with the hook shaped portion which is nearest the pivotalaxis of the, locking dedevice out of locking engagement with both hookshaped portions.

5. In a door securing device, the combination with adoor member, andaframe member, of a locking device on one of said menr bers havingscrewing movement and adapted to be rocked by its screwing movement soas to extend over both members, holding means on the otherone of themembers comprising portions in the form of hooks disposed at ditferentdistances from the axis of the locking member and in position forlocking engagement with the locking device, a portion on the lockingdevice arranged when opening the door for holding engagement with thehook shaped portion which is nearest the pivotal axis of the lockvice,and means to shift and rock the locking hooks disposed at differentdistances from the axis of the locking member and in position forlocking engagement-with the. looking device, a portion on the lockingdevice arranged when opening the'door for holding engagement with thehook shaped portion which is nearest the pivotal axis of the lockingdevice, means to screw said locking device out of lockingengagementwith'both hook shaped portions, and means to arrest the locking devicein an intermediate position in which its portion fo rholding engagementis in operative position,

7. In a door securing device, the combination with a door member, and aframe mem ber, of a lockingdevice on one ofsaid members mountedfor'rocking and axial movement and adapted to be rocked. so as to extendover both members, holding means on the other one of the memberscomprising locking device arranged when opening the door for holdingengagement with the hook shaped portion which is nearest the pivotalaxis of the locking device, means to shift and rock the locking deviceout of locking engagement with both hook shaped portions, and means toarrest said locking de vice in non-locking position.

8. In a door securing device, the combination with a door member, and aframe iember, of a locking device on one of said members having ascrewing movement and adapted to be rocked by its screwing movement soas to extend over both members, holding means on the other one of themembers comprising portions in the form of hooks disposed at differentdistances from the axis of the locking memberand in position for lockingengagement with the locking device, a portion on the locking devicearranged when opening the door for bolding engagement with the hookshaped por tion which is nearest the'pivotal axis of the locking device,means to move said locking device out of locking engagement with bothhook shaped portions, and means to arrest the locking device in anintermediate position in which its portion for holding engagement is inoperative position.

9. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members having ascrewing movement and adapted to be rocked by its screwing move ment soas to extend over both members, holding means on the other one of themembers comprising portions in the form of hooks disposed at differentdistances from the axis of the locking member and in position forlocking engagement with the locking device, a portion on the lockingdevice arranged when opening the door for holding engagement with thehook shaped por tion which is nearest the pivotal axis of the lockingdevice, means to screw said locking device out of locking engagementwith both hook shaped portions, and a spring actuated latch adapted toarrest said locking device in non-locking position.

10. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, netting means on the other one or are members comprisinghook shaped portions disposed at difierent distances from the pivot ofthe locking member and in position for locking engagement with saidlocking device, a portion on the locking device arranged when openingthe door for holding engagement with the hook shaped portion which isnearest the pivotal axis of the locking device, and means adapted to beoperated from the side of the door which is opposite to the securingdevice to shift and rock the lockingdevice out of locking engagementwith both hook shaped portions.

, 11. In a door securing device, the combination with a door member, anda frame member, of a locking device on one of said members having ascrewing movement and adapted to be rocked by its screwing movement soas to extend over both members, holding means on the other one of themem bers comprising portions in the form of hooks disposed at differentdistances from the axis of the locking member and in position forlocking engagement with the locking device, a portion on the lockingdevice arranged when opening the door for holding engagement with thehook shaped portion which is nearest the pivotal axis of the lockingdevice, and means adapted to be operated from the side of the door whichis opposite to the securing device to screw said locking device out oflocking engagement with both hook shaped portions.

12. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members, mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one ofthe members comprisinghook shaped portions disposed at different distances from the pivot ofthe looking member and in position for locking engagement with saidlocking device, a portion on the locking devicearranged when opening thedoor for holding engagement with the hook shaped portion which isnearest the pivotal axis of the locking device, and means comprising asafety lock and adapted to be operated from the side of the door whichis opposite to the securing device to screw said locking device out oflocking engagement with both hook shaped portions.

13. In a door securing device, the combination with a door member, and aframe member, of alocking device on one of said members having ascrewing movement and adapted to be rocked by its screwing movement soas to extend over both members, holding means on the other one of themembers comprising portions in the form of hooks disposed at differentdistances from the axis of the locking member and in posi tion forlocking engagement with the locking device, a portion on the lockingdevice arranged when opening the door for holding engagement with thehook shaped por tion which is nearest the pivotal axis of the lockingdevice, and means comprising a safety lock and adapted to be operatedfrom the side of the door which is opposite to the securing device toscrew said locking device out of locking engagement with both hookshaped portions.

14:. In a door securing device, the combination with a door member, anda frame member, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so'as V to extendoverboth members, holding means with said locking device, a portion onthe locking device arranged when openingjthe door for holding engagementwith the hook shaped portion which is nearest the pivotal axis of thelocking device, means to lock the locking device in looking position,and means to shift and rock the locking device out of locking engagementwith both hook shaped portions.

15. In a door securing device, the coinbination with a door member, anda frame member, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one of the members, comprisinghook shaped portions disposed at different distances from the pivot ofthe locking member and in position for locking engagement withrsaidlocking device, a portion on the locking device arranged when openingthe door for holding engagement with the hook shaped portion which isnearest the pivotal axis of the locking device, means to lock thelocking device in looking position, key operated means adapted to throwsaid locking means for the locking device out of operation, and means toshift and rock the looking device out of locking engagement with bothhook shaped portions.

16. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members, mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one of the members comprisinghook shaped portions disposed at different distances from the pivot ofthe locking mem-' her and in position for locking engagement with saidlocking device, a portion on the locking device arranged when openingthe door for holding engagement with the hook shaped portion which isnearest the pivotal axis of the locking device, a safety lock, and alever provided on the barrel of the safety lock and adapted when thebarrel is turned by means of the key to shift and rock the lockingdevice out of locking engagement with both hook shaped portions.

17. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members having ascrewing movement and adapted to be rocked by its screwing move ment soas to extend over both members, holding means on the other one of themembers comprising portions in the form of hooks disposed at differentdistancesfrom' the 'axisvof the locking member andin posie tion forlocking engagement with the lock-.

which is nearestthepivotal axis of the locking device, a safety lock,anda lever provided on the barrel of the safety lock and adapted whenthe barrel is turned by means of the key to lift and screw said lockingdevice out of locking engagement with both hook shaped portions. y

18; In a door securing device, the combi nation with a door member, anda frame member, of a locking device on one of said members mounted forrocking and axial movement and adapted to be rocked so as to extend overboth members, holding means on the other one of the members comprisinghookshaped portions disposed at different distances from the pivot ofthe locking member and in position for locking engagement with saidlocking device, a portion on the locking device arranged when openingthe door for holding engagement with the hook shaped portion which isnearest. the pivotal axis of the locking device, a safety lock, a

lever provided on the barrel of the safety lock and adapted when thebarrel is turned by means of the key to shift and rock the lockingdevice out of locking engagement with both hook shaped portions, alocking pawl on'said lever adapted tov lock the looking device inlooking position.

19. In a door securing device, the combination with a door member, and aframe member, of a locking device on one of said members having ascrewing movement and adapted to be rocked by its screwing movement soas to extend over both members, holding means on the other one of themembers comprising portions in the form of hooks disposed at differentdistances from the axis of the locking member and in position forlocking engagement with said locking device, a portion on the lockingdevice arranged when opening the door for holding engagement with thehook shaped portion which is nearest the pivotal axis of the lockingdevice, a safety lock, a lever provided on the barrel of the safety lockand adapted when the barrel is turned by means of the key to screw saidlocking device out of locking engagement with both hook shaped portions,and alocking pawl on said lever adapted to lock the holding device inlooking position. a

20. In a door securing device, the combination with a door member, and aframe member, of a locking device .on one of said members mounted forrocking and axial V hook shaped portions disposed at different distancesfrom the pivot of the looking member and in position for oint lockingengagement with said locking device, a portion on the locking devicearranged when opening the door for holding engagement with the hookshaped portion which is nearest the pivotal aXis of the locking device,a safety look, a lever provided on the barrel of the movement andadapted to be rocked so as i to extend over both members, holding meanson the other one of the memberscomprislng hook shaped portions disposedat different distances from the aXis of the locking member and inposition for looking engagement with said locking device, a portion onthe locking device arranged when opening the door for holding engagementwith the hook shaped portion which is nearest the pivotal aXis of thelocking device, a safety lock adapted to be shifted out of position byits key and into locking engagement with the locking device, and a leverprovided on the barrel of the safety lock and adapted when the barrel isturned by means of the key to shift and rock the locking device out oflocking engagement with both hook shaped portions.

In witness whereof, I have hereunto signed my name in the presence oftwo subscribing Witnesses.

JULIUS DORNETH.

Vitnesses VOLDEMAR HAUPT, HENRY I-IASPER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

